You're lucky you had a good experience. I bought my last tires from Costco three years ago. I used to only buy from them. I needed to drive my truck from NY to Virginia, pick up a trailer and come back. I went to Costco on Monday to buy new Michelin LTXs, but they didn't have them in stock. They ordered them and assured me I would have them in time to leave on the weekend. Wednesday, they called me and said my tires were in. I said I'll be in Thursday. I left work early Thursday to make sure I got there. Upon my arrival, the tire guy informs me he's all alone and there's a huge tire sale going on. Come back tomorrow. I asked him what happens tomorrow when you tell me the same thing?The next morning, I got up, drove to STS, bought the tires from them and they even gave me a break when I told them what Costco had done. Costco kept calling me to say my tires were in. I kept telling them I was alone, I'll get there when I get there.